In the footage, Lam peeks into a hallway and steps in and out of the elevator several times.

She was found dead in a rooftop water tank at the hotel (now known as Stay on Main), three weeks after she was last seen in the lobby. The coroner ruled her drowning death as accidental, and noted bipolar disorder as a "significant condition."

Rumours have persisted for months that the new season of "American Horror Story" is based on the Lam case.

Last month, series assistant Sara Stelwagen posted an Instagram shot from the set.

Vanity Fair has also posited that the new season could be based on the Lam case.

The magazine added that guests of the Cecil Hotel have included serial killers Jack Unterweger and Richard Ramirez. Beth Short, the victim in the mysterious "Black Dahlia" murder from 1947, also stayed there.

Murphy has said all the show's seasons are connected; actress Mena Suvari played Short in "American Horror Story's" first season.

This wouldn't mark the first time that Lam's story has been dramatized.

The 2013 season finale of crime show "Castle" told the story of a student who was found dead in a water tower, in what seemed to be a reference to the Lam case.

On Feb. 19, Lam's body was discovered by a worker in one of the Cecil Hotel's four water tanks on the building's roof. They were checking a complaint about low water pressure.

A man, left, leaves the Cecil Hotel with belongings as Michael and Sabina Baugh, both 27, of Plymouth, England, wait for transportation as they leave the hotel in downtown Los Angeles on Feb. 20. Early Tuesday, police discovered the body of a Canadian woman at the bottom of the historic hotel's water tank, weeks after she was reported missing. The Baughs, on a 14-day tour package, had been there eight days and had showered in and drank the water. The couple's tour operator was less than cooperative in finding them other accommodations.

An autopsy on the body was completed on Feb. 21, but the cause of death has been "deferred pending additional tests," said Ed Winter, L.A. Country assistant chief coroner.

Two former guests file a class-action lawsuit against the Cecil Hotel after Elisa Lam's body was found in a water tank.

Elisa Lam died of "accidental due to drowning, other significant conditions: bipolar disorder," confirmed Los Angeles County Coroner.